Monterrey and Chicago are usually on the same time. Both cities use Central Time (CST/CDT, UTC-6/-5). When it's 12:00 PM in Monterrey, it's also 12:00 PM in Chicago.
Both cities observe daylight saving time on similar schedules, keeping them synchronized year-round.
Any time works! Since both cities share the same time zone, you can call during normal business hours (9:00 AM - 6:00 PM) without any conversion needed.
Monterrey is Mexico's industrial capital and has strong business connections with the US Midwest. Both cities have significant manufacturing industries and serve as major business hubs in their respective regions.